DE550842C - Device for cleaning liquids - Google Patents

Description

The present invention relates to an apparatus for cleaning Liquids (especially water) of the kind in which below one Reagent dosing apparatus, a clarifying vessel is arranged in which the Water with the reagents is provided with a mixing device, conical after at the bottom there is a widening funnel

ίο is.

For the downward movement of the liquid it is for the sake of good Mixing required that the speed is slowed down in a suitable manner.

While in the known devices for this purpose particularly separate mixing devices were required, according to the present invention for calming the in Moving sewage water is a spiral path rising against the current is used, the inhibiting effect of which is further supported by a grate underneath.

In the subject matter of the invention, the opposite of the downward direction is used The screw thread increasing the flow of liquid is not used as a guide device and mixing device, but also the one caused by the agitator and already partially through the conical installation inhibited circular and downward movement of the water at the outlet from the installation to a minimum. This ensures that the precipitant caused by the dissolved precipitant Flocculations come in peace and have the opportunity to subside. "Supports and This effect is ensured by the grate arranged underneath. The sinking one So sludge has the opportunity to settle in the lower part of the clarification tank and to thicken in the conical tip.

In the drawing, the invention is shown in one embodiment, and although shows "

Fig. Ι a longitudinal section, -

Fig. 2 shows a cross section. ";

The new device consists of the lower clarifying device B, which is formed from the settling chamber c , in which a downwardly conically widening pipe q is installed, inside of which the shaft w equipped with vanes h rotates.

Above the clarifying device B , a dosing and mixing container is arranged with the intermediary of an intermediate structure e , inside which the shaft m , which is equipped with vanes /, i ' , rotates. The two shafts w and m are connected to one another by a releasable coupling k and are driven by a bevel gear mechanism, which is set in rotation from the outside by a belt pulley ο. Upwardly, the settling chamber is c by a on a sieve, filter r resting completed and the feed of the sludge takes place to be clarified water through a pipe clock t which q in the upper part of the mixing cylinder tangentially

opens and to which a pipeline ν which is connected to the lower part of the container A ₁ and can be shut off by a valve is connected. With / is an annular channel surrounding the filter egg, to which the drain pipe * is connected. Underneath the shaft w , an accumulating screw thread s is built into the mixing cylinder q , and the settling chamber c is delimited at the bottom by ίο a funnel-like sludge space ρ. A grate g is built in between this sludge funnel ρ and the water tank c , and a drain j / controllable by a valve ζ is connected to the lower tip of the sedimentation basin.

The mode of operation of the invention is as follows:

The sludge water supplied through the pipeline t is given a certain twist due to the tarigential confluence of the pipe t in the mixing cylinder q , the direction of which is opposite to the direction of rotation of the shaft w . By the action of the wing /; an intimate mixing of the sludge water with the reagents supplied from the upper container., 4 through the line ν is then brought about. These reagents are constantly stirred in the container A by the action of the blades i, the lower stirring arms / working upwards and the upper stirring arms i ' working downwards in order to prevent the precipitating agents from settling on the floor and to dissolve them quickly cause. This stirring process can be continued or interrupted by switching the coupling on and off.

It is sought according to the invention,

to inhibit the resultant in the upper part of the mixing cylinder whisking progressively and ultimately to a standstill in such a manner that a deterioration of the speed does not enter the fed quality of waste water. The reduction in the speed of the available mixing q in the mixing vessel is tapered by di, e extension of the container q initiated downwards and closed off by the screw flight, which increases counter to the water direction, and is kept so wide that it to a complete stabilization of the in the Heel basin'c upward movement of water comes. This effect is also ensured by the grate through which the sludge sinks undisturbed to the bottom of the basin ρ.

The clarified water rises very slowly and at a steadily decreasing speed through the sedimentation tank c upwards, passes through the filter if into the annular space /, from where it is discharged through the line χ.

The accumulated sludge is drawn off through the discharge line y.

Claims (1)

Claim: Device for cleaning liquids, in particular water, consisting of a reagent dosing apparatus with a clarifying vessel arranged underneath, in which a conically downwardly expanding funnel provided with a mixing device is provided for mixing the water with the reagents, characterized in that underneath of the well-known agitator (Ji ) provided in the conically widened funnel (q) , there is a built-in screw passage (s) that rises against the flow and serves to calm the agitated sewage water, the inhibiting effect of which is provided by a grate (g) underneath. is supported. 1 sheet of drawings